chore: planning gate — milestones, issues, and task breakdown

Break PRD into 8 milestones (Phase 0–7) with 59 issues on Gitea.
Populate TASKS.md, update mission manifest, initialize scratchpad.
Repo created at git.mosaicstack.dev/mosaic/mosaic-stack.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/MISSION-MANIFEST.md

@@ -0,0 +1,66 @@
+# Mission Manifest — MVP
+
+> Persistent document tracking full mission scope, status, and session history.
+> Updated by the orchestrator at each phase transition and milestone completion.
+
+## Mission
+
+**ID:** mvp-20260312
+**Statement:** Build Mosaic Stack v0.1.0 — a self-hosted, multi-user AI agent platform with web dashboard, TUI, remote control, shared memory, mission orchestration, and extensible skill/plugin architecture. All TypeScript. Pi as agent harness. Brain as knowledge layer. Queue as coordination backbone.
+**Phase:** Planning
+**Current Milestone:** Phase 0: Foundation (v0.0.1)
+**Progress:** 0 / 8 milestones
+**Status:** active
+**Last Updated:** 2026-03-13 01:15 UTC
+
+## Success Criteria
+
+- [ ] AC-1: Core chat flow — login, send message, streamed response, conversations persist
+- [ ] AC-2: TUI integration — `mosaic tui` connects to gateway, same context as web
+- [ ] AC-3: Discord remote control — bot responds, routes through gateway, threads work
+- [ ] AC-4: Gateway orchestration — multi-provider routing, fallback, concurrent sessions
+- [ ] AC-5: Task & project management — CRUD, kanban, mission tracking, brain MCP tools
+- [ ] AC-6: Memory system — auto-capture, semantic search, preferences, log summarization
+- [ ] AC-7: Auth & RBAC — email/password, Authentik SSO, role enforcement
+- [ ] AC-8: Multi-provider LLM — 3+ providers routing correctly
+- [ ] AC-9: MCP — gateway MCP endpoint, brain + queue tools via MCP
+- [ ] AC-10: Deployment — `docker compose up` from clean state, CLI on bare metal
+- [ ] AC-11: @mosaic/* packages — all 7 migrated packages build, test, integrate
+
+## Milestones
+
+| # | ID | Name | Status | Branch | Issue | Started | Completed |
+|---|-----|------|--------|--------|-------|---------|-----------|
+| 0 | ms-157 | Phase 0: Foundation (v0.0.1) | not-started | — | — | — | — |
+| 1 | ms-158 | Phase 1: Core API (v0.0.2) | not-started | — | — | — | — |
+| 2 | ms-159 | Phase 2: Agent Layer (v0.0.3) | not-started | — | — | — | — |
+| 3 | ms-160 | Phase 3: Web Dashboard (v0.0.4) | not-started | — | — | — | — |
+| 4 | ms-161 | Phase 4: Memory & Intelligence (v0.0.5) | not-started | — | — | — | — |
+| 5 | ms-162 | Phase 5: Remote Control (v0.0.6) | not-started | — | — | — | — |
+| 6 | ms-163 | Phase 6: CLI & Tools (v0.0.7) | not-started | — | — | — | — |
+| 7 | ms-164 | Phase 7: Polish & Beta (v0.1.0) | not-started | — | — | — | — |
+
+## Deployment
+
+| Target | URL | Method |
+|--------|-----|--------|
+| Docker Compose (dev) | localhost | docker compose up |
+| Production | TBD | Docker Swarm via Portainer |
+
+## Token Budget
+
+| Metric | Value |
+|--------|-------|
+| Budget | — |
+| Used | 0 |
+| Mode | normal |
+
+## Session History
+
+| Session | Runtime | Started | Duration | Ended Reason | Last Task |
+|---------|---------|---------|----------|--------------|-----------|
+| 1 | claude-opus-4-6 | 2026-03-13 01:00 UTC | — | — | Planning gate |
+
+## Scratchpad
+
+Path: `docs/scratchpads/mvp-20260312.md`